材料期刊网

Through real time synchrotron radiation topography observation, dynamical behavior of ferroelectric domains as a function of temperature in unpoled 0.92Pb(Zn1/3Nb2/3)O-3-0.08PbTiO(3) (PZN-8% PT) crystals is investigated. A sequence of temperature-induced monoclinic phase transformations is observed, and verified by combining this method with temperature-dependence Raman scattering, capacitance measurement, and X-ray diffraction. This phase evolution picture seems remarkably unique as the monoclinic phase is able to coexist with the cubic phase well above T-C. (C) 2008 Elsevier Ltd. All rights reserved.